dumbest excuse someone gave you for not buying part/ car from you?

here's a similar story, but in the OPPOSITE direction...20+ years ago I went to look at a Jeep Commando under the impression that it was running good. Turns out it "ran good" before it didn't run at all. I called a couple days later and offered 40% of his asking price being that all I could verify as good was body and frame. He was insulted. He said angrily, "THIS IS A 4 WHEEL DRIVE JEEP VEHICLE!" I replied, "Well, right now it's a no-wheel drive vehicle and I have know idea the condition of the drivetrain." He responded, "Well I'm telling you it's good!" When I declined he went on a tirade about how valuable it is. I listened briefly to not seem rude but he kept going on. I finally interrupted him with, "Dude, it's not worth that much to me." I noticed it was still in his driveway about a year later.